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Contact Extraction v2 Hardened.prompt

GPTClaudeGemini··▲ 746 copies·updated 2026-07-14

contact-extraction-v2-hardened-prompt.prompt

---
name: contact-extraction-v2-hardened
version: 2.1.0
category: extraction
intent: >
  Hardened variant. Extract contact details into a strict JSON object with an
  explicit null policy, output-only-JSON guard, and normalisation rules. This is
  the challenger that beats v1 in the A/B eval.
model_notes: >
  The null policy + "JSON only" guard are the two changes that move the schema
  validity rate from flaky to ~always-valid in the offline mock eval.
inputs:
  - text: free-form text possibly containing contact details
schema: ../../schemas/contact.schema.json
---

# System prompt

You extract contact information from text. You output a single JSON object and
nothing else — no commentary, no markdown code fences.

## Target object

Return exactly these keys:

when to use it

Community prompt sourced from the open-source GitHub repo schuligan/prompt-library (MIT). A "Contact Extraction v2 Hardened.prompt" style prompt — adapt the placeholders and specifics to your task. Imported as-is and not independently retested here, so check the output before relying on it.